(c++) what to do if we want to print the following on the screen: hello \\n world

Question

(c++) what to do if we want to print the following on the screen:
hello \\n world

Answer 1

C++:
std::cout << "Hello \\\\n World";

Java:
System.out.println("Hello \\\\n World");

Answer 2

c++:
cout<<"hello \\\\n world \n";

Answer 3

cout<<"hello \\\\n world";